Chapter2-Origin of Soil and Grain Size¶
Ex1-pg44¶
In [2]:
#calculate the values and plot the graph
%matplotlib inline
import warnings
warnings.filterwarnings('ignore')
import math
from math import log
import numpy
from math import tan
import matplotlib
from matplotlib import pyplot
#given
e=numpy.array([100,94.5,86.3,74.1,54.9,38.1,9.3,1.7,0])
p=numpy.array([4.75,2.00,0.850,0.425,0.250,0.180,0.150,0.075,0])
#calculations
#results
pyplot.plot(p,e)
pyplot.xlabel('Particle size ')
pyplot.ylabel('percent finer ,e')
pyplot.title('Graph of particle size vs percent finer')
pyplot.show()
print('look at the axis reverse in text book')
Ex2-pg45¶
In [1]:
#calculate uniformity coefficient and coefficient of gradation
##initialisation of variables
##from graph
d= 0.15 ##mm
w= 0.17 ##mm
a= 0.27 ##mm
##calculations
C= a/d
c= w**2/(a*d)
##results
print'%s %.1f %s'%('uniformity coefficient = ',C,"")
print'%s %.2f %s'% ('coefficient of gradation = ',c,' ')